The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2007
Filed:
Jul. 10, 2003
Hiroaki Kikuchi, Okegawa, JP;
Shoichi Takahashi, Okegawa, JP;
Kiyoshi Tamaru, Okegawa, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
In this manufacturing method for a frame body, after ring rolling a metal material to form a ring-shaped member, a rectangular member is formed by pressing and deforming this ring-shaped member in the radial direction. At this time, an angle of corner portions that impart the rectangular shape to the rectangular member is formed smaller than an angle of the frame body that is to be obtained by die forging the rectangular member. According to the frame body obtained by this manufacturing method for a frame body, it is possible to increase the mechanical strength, and in particular, the creep strength. Furthermore, when forming the frame body, the occurrence of defects during manufacture may be restrained, it becomes possible to realize a reduction of the amount of waste metal material and the manufacturing time, and thereby this frame body may be formed inexpensively.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile